/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package ru.miit.elearning.servlets;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.hibernate.Session;
import ru.miit.elearning.hibernate.dao.CurriculumDAO;
import ru.miit.elearning.hibernate.dao.HibernateUtil;

/**
 *
 * @author Cyclone
 */
public class SetMarkServlet extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();

        Session session = null;
        try {

            int curriculumId = Integer.parseInt(request.getParameter("curriculumId"));
            int userId = Integer.parseInt(request.getParameter("userId"));
            int mark = Integer.parseInt(request.getParameter("mark"));

            session = HibernateUtil.getSessionFactory().getCurrentSession();
            session.beginTransaction().begin();
            CurriculumDAO curriculumDAO = new CurriculumDAO(session);

            curriculumDAO.setMark(userId, curriculumId, curriculumDAO.findUserIdByLogin(request.getRemoteUser()), mark);
            session.getTransaction().commit();

        //out.println("ok");

        } catch (Exception e) {
            e.printStackTrace();
            if (session != null && session.isConnected()) {
                session.getTransaction().rollback();
            }
            out.print("Error: Произошла ошибка выставления оценки!\nПожалуйста, сообщите администратору.\n" + e + "\n" + e.getStackTrace()[0]);
        } finally {
            out.close();
            if (session != null && session.isConnected()) {
                session.close();
            }
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
